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Unit D - Human Body - Grade 5

By Albert Hayes,2014-04-12 23:17
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1 Unit D - Human Body - Grade 5 Chapter 1 Respiration and Excretion Lesson 1 How Does Your Body Take in Oxygen? -How does your nose prepare air for your lungs? -How is oxygen exchanged for carbon dioxide in your lungs? -How do muscles help your lungs work? Lesson 2 How Does Your Body Use Oxygen? -How does oxygen get to body cells from you..
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